我一直在寻找可以检测访问网站的用户使用的是火狐3还是火狐4的代码。我所找到的只是检测浏览器类型而不是版本的代码。
如何检测这样的浏览器版本?
当前回答
我正在为自己寻找一个解决方案，因为jQuery 1.9.1及以上已经删除了$。浏览器的功能。我想出了这个小函数。 它确实需要一个全局变量(我称之为mine _browser)来检查它是哪个浏览器。我已经写了一个jsfiddle来说明如何使用它，当然，它可以通过为_browser添加一个测试来扩展到其他浏览器。Foo，其中Foo是浏览器的名称。我只做了流行的。
detectBrowser ()
_browser = {}; function detectBrowser() { var uagent = navigator.userAgent.toLowerCase(), match = ''; _browser.chrome = /webkit/.test(uagent) && /chrome/.test(uagent) && !/edge/.test(uagent); _browser.firefox = /mozilla/.test(uagent) && /firefox/.test(uagent); _browser.msie = /msie/.test(uagent) || /trident/.test(uagent) || /edge/.test(uagent); _browser.safari = /safari/.test(uagent) && /applewebkit/.test(uagent) && !/chrome/.test(uagent); _browser.opr = /mozilla/.test(uagent) && /applewebkit/.test(uagent) && /chrome/.test(uagent) && /safari/.test(uagent) && /opr/.test(uagent); _browser.version = ''; for (x in _browser) { if (_browser[x]) { match = uagent.match( new RegExp("(" + (x === "msie" ? "msie|edge" : x) + ")( |\/)([0-9]+)") ); if (match) { _browser.version = match[3]; } else { match = uagent.match(new RegExp("rv:([0-9]+)")); _browser.version = match ? match[1] : ""; } break; } } _browser.opera = _browser.opr; delete _browser.opr; } detectBrowser(); console.log(_browser)
检查当前浏览器是否是Opera
if (_browser.opera) { // Opera specific code }
编辑修复了格式，修复了对IE11和Opera/Chrome的检测，从结果更改为browserResult。现在_browser键的顺序不重要了。更新了jsFiddle链接。
2015/08/11编辑为Internet Explorer 12 (EDGE)添加了新的测试用例，修复了一个小的regexp问题。更新了jsFiddle链接。
其他回答
这里有更好的兼容性@kennebec snippet; 将返回浏览器名称和版本(返回72而不是72.0.3626.96)。
在Safari, Chrome, Opera, Firefox, IE, Edge, UCBrowser上测试，也在移动设备上测试。
function browser() {
var userAgent = navigator.userAgent,
match = userAgent.match(/(opera|chrome|crios|safari|ucbrowser|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [],
result = {},
tem;
if (/trident/i.test(match[1])) {
tem = /\brv[ :]+(\d+)/g.exec(userAgent) || [];
result.name = "Internet Explorer";
} else if (match[1] === "Chrome") {
tem = userAgent.match(/\b(OPR|Edge)\/(\d+)/);
if (tem && tem[1]) {
result.name = tem[0].indexOf("Edge") === 0 ? "Edge" : "Opera";
}
}
if (!result.name) {
tem = userAgent.match(/version\/(\d+)/i); // iOS support
result.name = match[0].replace(/\/.*/, "");
if (result.name.indexOf("MSIE") === 0) {
result.name = "Internet Explorer";
}
if (userAgent.match("CriOS")) {
result.name = "Chrome";
}
}
if (tem && tem.length) {
match[match.length - 1] = tem[tem.length - 1];
}
result.version = Number(match[match.length - 1]);
return result;
}
我用ASP代码做了一个检测浏览器，浏览器版本，OS和OS版本的脚本。 我在ASP中这样做的原因是因为我想将数据存储在日志数据库中。 所以我必须检测浏览器服务器端。
代码如下:
on error resume next
ua = lcase(Request.ServerVariables("HTTP_USER_AGENT"))
moz = instr(ua,"mozilla")
ffx = instr(ua,"firefox")
saf = instr(ua,"safari")
crm = instr(ua,"chrome")
max = instr(ua,"maxthon")
opr = instr(ua,"opera")
ie4 = instr(ua,"msie 4")
ie5 = instr(ua,"msie 5")
ie6 = instr(ua,"msie 6")
ie7 = instr(ua,"msie 7")
ie8 = instr(ua,"trident/4.0")
ie9 = instr(ua,"trident/5.0")
if moz>0 then
BrowserType = "Mozilla"
BrVer = mid(ua,moz+8,(instr(moz,ua," ")-(moz+8)))
end if
if ffx>0 then
BrowserType = "FireFox"
BrVer = mid(ua,ffx+8)
end if
if saf>0 then
BrowserType = "Safari"
BrVerPlass = instr(ua,"version")
BrVer = mid(ua,BrVerPlass+8,(instr(BrVerPlass,ua," ")-(BrVerPlass+8)))
end if
if crm>0 then
BrowserType = "Chrome"
BrVer = mid(ua,crm+7,(instr(crm,ua," ")-(crm+7)))
end if
if max>0 then
BrowserType = "Maxthon"
BrVer = mid(ua,max+8,(instr(max,ua," ")-(max+8)))
end if
if opr>0 then
BrowserType = "Opera"
BrVerPlass = instr(ua,"presto")
BrVer = mid(ua,BrVerPlass+7,(instr(BrVerPlass,ua," ")-(BrVerPlass+7)))
end if
if ie4>0 then
BrowserType = "Internet Explorer"
BrVer = "4"
end if
if ie5>0 then
BrowserType = "Internet Explorer"
BrVer = "5"
end if
if ie6>0 then
BrowserType = "Internet Explorer"
BrVer = "6"
end if
if ie7>0 then
BrowserType = "Internet Explorer"
BrVer = "7"
end if
if ie8>0 then
BrowserType = "Internet Explorer"
BrVer = "8"
if ie7>0 then BrVer = BrVer & " (in IE7 compability mode)"
end if
if ie9>0 then
BrowserType = "Internet Explorer"
BrVer = "9"
if ie7>0 then BrVer = BrVer & " (in IE7 compability mode)"
if ie8>0 then BrVer = BrVer & " (in IE8 compability mode)"
end if
OSSel = mid(ua,instr(ua,"(")+1,(instr(ua,";")-instr(ua,"("))-1)
OSver = mid(ua,instr(ua,";")+1,(instr(ua,")")-instr(ua,";"))-1)
if BrowserType = "Internet Explorer" then
OSStart = instr(ua,";")
OSStart = instr(OSStart+1,ua,";")
OSStopp = instr(OSStart+1,ua,";")
OSsel = mid(ua,OSStart+2,(OSStopp-OSStart)-2)
end if
Select case OSsel
case "windows nt 6.1"
OS = "Windows"
OSver = "7"
case "windows nt 6.0"
OS = "Windows"
OSver = "Vista"
case "windows nt 5.2"
OS = "Windows"
OSver = "Srv 2003 / XP x64"
case "windows nt 5.1"
OS = "Windows"
OSver = "XP"
case else
OS = OSSel
End select
Response.write "<br>" & ua & "<br>" & BrowserType & "<br>" & BrVer & "<br>" & OS & "<br>" & OSver & "<br>"
'Use the variables here for whatever you need........
<script type="text/javascript">
var version = navigator.appVersion;
alert(version);
</script>
在纯Javascript中，您可以在导航器上执行RegExp匹配。使用userAgent查找Firefox版本:
var uMatch = navigator.userAgent.match(/Firefox\/(.*)$/),
ffVersion;
if (uMatch && uMatch.length > 1) {
ffVersion = uMatch[1];
}
如果不是Firefox浏览器，ffVersion将未定义。
参见工作示例→
var nVer = navigator.appVersion;
var nAgt = navigator.userAgent;
var browserName = navigator.appName;
var fullVersion = ''+parseFloat(navigator.appVersion);
var majorVersion = parseInt(navigator.appVersion,10);
var nameOffset,verOffset,ix;
// In Opera, the true version is after "Opera" or after "Version"
if ((verOffset=nAgt.indexOf("Opera"))!=-1) {
browserName = "Opera";
fullVersion = nAgt.substring(verOffset+6);
if ((verOffset=nAgt.indexOf("Version"))!=-1)
fullVersion = nAgt.substring(verOffset+8);
}
// In MSIE, the true version is after "MSIE" in userAgent
else if ((verOffset=nAgt.indexOf("MSIE"))!=-1) {
browserName = "Microsoft Internet Explorer";
fullVersion = nAgt.substring(verOffset+5);
}
// In Chrome, the true version is after "Chrome"
else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) {
browserName = "Chrome";
fullVersion = nAgt.substring(verOffset+7);
}
// In Safari, the true version is after "Safari" or after "Version"
else if ((verOffset=nAgt.indexOf("Safari"))!=-1) {
browserName = "Safari";
fullVersion = nAgt.substring(verOffset+7);
if ((verOffset=nAgt.indexOf("Version"))!=-1)
fullVersion = nAgt.substring(verOffset+8);
}
// In Firefox, the true version is after "Firefox"
else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) {
browserName = "Firefox";
fullVersion = nAgt.substring(verOffset+8);
}
// In most other browsers, "name/version" is at the end of userAgent
else if ( (nameOffset=nAgt.lastIndexOf(' ')+1) <
(verOffset=nAgt.lastIndexOf('/')) )
{
browserName = nAgt.substring(nameOffset,verOffset);
fullVersion = nAgt.substring(verOffset+1);
if (browserName.toLowerCase()==browserName.toUpperCase()) {
browserName = navigator.appName;
}
}
// trim the fullVersion string at semicolon/space if present
if ((ix=fullVersion.indexOf(";"))!=-1)
fullVersion=fullVersion.substring(0,ix);
if ((ix=fullVersion.indexOf(" "))!=-1)
fullVersion=fullVersion.substring(0,ix);
majorVersion = parseInt(''+fullVersion,10);
if (isNaN(majorVersion)) {
fullVersion = ''+parseFloat(navigator.appVersion);
majorVersion = parseInt(navigator.appVersion,10);
}
document.write(''
+'Browser name = '+browserName+'<br>'
+'Full version = '+fullVersion+'<br>'
+'Major version = '+majorVersion+'<br>'
+'navigator.appName = '+navigator.appName+'<br>'
+'navigator.userAgent = '+navigator.userAgent+'<br>'
)
看这里的演示..http://jsfiddle.net/hw4jM/3/
推荐文章
- src和dist文件夹的作用是什么?
- jQuery UI对话框-缺少关闭图标
- 如何使用AngularJS获取url参数
- 将RGB转换为白色的RGBA
- 如何将“camelCase”转换为“Camel Case”?
- 我们可以在另一个JS文件中调用用一个JavaScript编写的函数吗?
- 如何使用JavaScript重新加载ReCaptcha ?
- jQuery。由于转义了JSON中的单引号，parseJSON抛出“无效JSON”错误
- 在JavaScript关联数组中动态创建键
- ReactJS和公共文件夹中的图像
- 在React Native中使用Fetch授权头
- 为什么我的球(物体)没有缩小/消失?
- 如何使用jQuery检测页面的滚动位置
- if(key in object)或者if(object. hasownproperty (key)
- 一元加/数字(x)和parseFloat(x)之间的区别是什么?
